Sith Atrocities in the EU
I created a very similar thread to this in the prequel thread, but it was locked because it was not the EU subforum, and without bringing up the EU, as the moderator and I both noticed, the discussion wasn't really progressing or going anywhere. So, I'm creating a similar thread in the EU subforum.
The Sith started the clone wars and they were responsible for the naboo invasion, all evil deeds, not to mention the destruction of alderaan with the death star (and more possible planets being destroyed with the death star in the future had they won the war) and the jedi order, and Palpatine's EU other imperial atrocities.
However, there is much indication that even before all of those evil things that Palpatine did happened, the Jedi and the sith were enemies for a long time before that, due to specific Sith actions that the films never explained.
In TPM, the jedi council talked about the Sith as if some ancient enemy that has returned from a thousand years ago, and they thought were extinct. This proves that even long before Palpatine's imperial atrocities, the Sith were considered to be evil.
And, also, the Force went out of it's way to create a person-Anakin Skywalker, to kill the Sith, long before any of Palpatine's atrocities ever happened. A Jedi seer told a century old prophecy about that.
And, most of all, in ROTS, Mace Windu and Palpatine's dialogue all together imply that the Sith once ruled the galaxy, and that "the Sith oppression will never return". The Sith were an ancient enemy that once ruled the galaxy in oppresion.
Mace Windu went to arrest Palpatine not just because he started the clone wars, but because he knew that the Sith were just evil in general. But yet Windu had no idea about the Sith building the death star, and neither did the other jedi, and yet, they still thought that sith were evil in general.
And, Padme refused to join Anakin as a Sith to rule the galaxy, but she had no idea about the death star, yet she just knew that the Sith were evil and had a very bad reputation.
But, why were the Sith evil, before all of Palpatine's atrocities, such as the death star and starting wars, etc?
I'm not talking about Palpatine's obvious evilness, it's obvious that he did evil things such as blowing up planets and starting wars just to gain more power. I'm talking about the Sith in general.
What atrocities did the old Sith (from over a millenia ago), do, that made them evil? None of this is ever specified in the films, so I'm asking some of the EU experts to explain the Sith's evilness to me.